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2. 发明申请

WO2004002340A1 DELIVERY CANNULA WITH DETACHABLE TIP AND SEALING PLUNGER FOR SELECTIVELY SEALING SIDE APERTURES 审中-公开
标题翻译：递送肛门与可拆卸的提示和密封栓塞，用于选择性密封侧面
公开(公告)号：WO2004002340A1
公开(公告)日：2004-01-08
申请号：PCT/US2003/018731
申请日：2003-06-11
申请人： SCIMED LIFE SYSTEMS, INC.
发明人： OLSON, Stanley, W., Jr. , JANSEN, Lex, P. , BURNS, Michael
IPC分类号： A61B17/58
CPC分类号： A61B17/7098 , A61B17/8811 , A61M25/0069 , A61M25/007 , A61M2210/02
摘要： Cannulas are provided for delivering therapeutic material to a treatment site. The cannula includes a cannula body with a plurality of openings at the distal end, including a longitudinal opening and a plurality of transverse openings that are axially spaced from each other. The cannula also includes a plunger that is configured to be slidably disposed within the cannula lumen. When the plunger is proximally displaced in the cannula lumen, the plunger seals the distal end and deflects the therapeutic material out the transverse openings. As the plunger is proximally displaced within the lumen, the therapeutic material is forced to perfuse out transverse openings located proximal of the plunger position. In one embodiment, the plunger includes an additional pliable sealable member. In another embodiment, the distal end of the cannula body may be implanted by separating the distal end from the cannula body.
摘要翻译：提供插管用于将治疗材料递送至治疗部位。套管包括在远端具有多个开口的套管主体，包括纵向开口和彼此轴向间隔开的多个横向开口。插管还包括被构造成可滑动地设置在套管内腔内的柱塞。当柱塞在套管腔中向近端移位时，柱塞密封远端并使治疗材料偏离横向开口。当柱塞在腔内向近端移位时，治疗材料被迫灌注位于柱塞位置附近的横向开口。在一个实施例中，柱塞包括附加的柔韧的可密封构件。在另一个实施例中，套管主体的远端可以通过将远端与套管主体分离而被植入。

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